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Results: 1-25 | 26-31
Results: 1-25/31
BeppoSAX view of NGC 526A: A Seyfert 1.9 galaxy with a flat spectrum
Authors: Landi, R Bassani, L Malaguti, G Cappi, M Comastri, A Dadina, M Di Cocco, G Fabian, AC Palazzi, E Palumbo, GGC Trifoglio, M
Citation: R. Landi et al., BeppoSAX view of NGC 526A: A Seyfert 1.9 galaxy with a flat spectrum, ASTRON ASTR, 379(1), 2001, pp. 46-53
The BeppoSAX High Energy Large Area Survey - IV. On the soft X-ray properties of the hard X-ray-selected HELLAS sources
Authors: Vignali, C Comastri, A Fiore, F La Franca, F
Citation: C. Vignali et al., The BeppoSAX High Energy Large Area Survey - IV. On the soft X-ray properties of the hard X-ray-selected HELLAS sources, ASTRON ASTR, 370(3), 2001, pp. 900-908
The BeppoSAX High Energy Large Area Survey (HELLAS) - II. Number counts and X-ray spectral properties
Authors: Fiore, F Giommi, P Vignali, C Comastri, A Matt, G Perola, GC La Franca, F Molendi, S Tamburelli, F Antonelli, LA
Citation: F. Fiore et al., The BeppoSAX High Energy Large Area Survey (HELLAS) - II. Number counts and X-ray spectral properties, M NOT R AST, 327(3), 2001, pp. 771-780
The BeppoSAX High Energy Large Area Survey (HELLAS) - III. Testing synthesis models for the X-ray background
Authors: Comastri, A Fiore, F Vignali, C Matt, G Perola, GC La Franca, F
Citation: A. Comastri et al., The BeppoSAX High Energy Large Area Survey (HELLAS) - III. Testing synthesis models for the X-ray background, M NOT R AST, 327(3), 2001, pp. 781-787
BeppoSAX observations of the Seyfert 2 galaxies NGC 7172 and ESO 103-G35
Authors: Akylas, A Georgantopoulos, I Comastri, A
Citation: A. Akylas et al., BeppoSAX observations of the Seyfert 2 galaxies NGC 7172 and ESO 103-G35, M NOT R AST, 324(2), 2001, pp. 521-528
Chandra detection of the radio and optical double hot spot of 3C 351
Authors: Brunetti, G Bondi, M Comastri, A Pedani, M Varano, S Setti, G Hardcastle, MJ
Citation: G. Brunetti et al., Chandra detection of the radio and optical double hot spot of 3C 351, ASTROPHYS J, 561(2), 2001, pp. L157-L160
The BeppoSAX view of the X-ray active nucleus of NGC 4258
Authors: Fiore, F Pellegrini, S Matt, G Antonelli, LA Comastri, A della Ceca, R Giallongo, E Mathur, S Molendi, S Siemiginowska, A Trinchieri, G Wilkes, B
Citation: F. Fiore et al., The BeppoSAX view of the X-ray active nucleus of NGC 4258, ASTROPHYS J, 556(1), 2001, pp. 150-157
Constraining the black hole mass and accretion rate in the narrow-line Seyfert 1 galaxy RE J1034+396
Authors: Puchnarewicz, EM Mason, KO Siemiginowska, A Fruscione, A Comastri, A Fiore, F Cagnoni, I
Citation: Em. Puchnarewicz et al., Constraining the black hole mass and accretion rate in the narrow-line Seyfert 1 galaxy RE J1034+396, ASTROPHYS J, 550(2), 2001, pp. 644-654
Chandra study of an overdensity of X-ray sources around two distant (z similar to 0.5) clusters
Authors: Cappi, M Mazzotta, P Elvis, M Burke, DJ Comastri, A Fiore, F Forman, W Fruscione, A Green, P Harris, D Hooper, EJ Jones, C Kaastra, JS Kellogg, E Murray, S McNamara, B Nicastro, F Ponman, TJ Schlegel, EM Siemiginowska, A Tananbaum, H Vikhlinin, A Virani, S Wilkes, B
Citation: M. Cappi et al., Chandra study of an overdensity of X-ray sources around two distant (z similar to 0.5) clusters, ASTROPHYS J, 548(2), 2001, pp. 624-638
BeppoSAX observations of Narrow-Line Seyfert 1 galaxies - II. Ionized ironfeatures in Arakelian 564
Authors: Comastri, A Stirpe, GM Vignali, C Brandt, WN Leighly, KM Fiore, F Guainazzi, M Matt, G Nicastro, F Puchnarewicz, EM Siemiginowska, A
Citation: A. Comastri et al., BeppoSAX observations of Narrow-Line Seyfert 1 galaxies - II. Ionized ironfeatures in Arakelian 564, ASTRON ASTR, 365(3), 2001, pp. 400-408
The BeppoSAX view of NLS1s
Authors: Comastri, A
Citation: A. Comastri, The BeppoSAX view of NLS1s, NEW ASTR R, 44(7-9), 2000, pp. 403-410
Spectroscopic identification of ten faint hard X-ray sources discovered byChandra
Authors: Fiore, F La Franca, F Vignali, C Comastri, A Matt, G Perola, GC Cappi, M Elvis, M Nicastro, F
Citation: F. Fiore et al., Spectroscopic identification of ten faint hard X-ray sources discovered byChandra, NEW ASTRON, 5(3), 2000, pp. 143-153
Optical, near-infrared and hard X-ray observations of SAXJ1353.9+1820: a red quasar
Authors: Vignali, C Mignoli, M Comastri, A Maiolino, R Fiore, F
Citation: C. Vignali et al., Optical, near-infrared and hard X-ray observations of SAXJ1353.9+1820: a red quasar, M NOT R AST, 314(1), 2000, pp. L11-L15
The complex X-ray absorbers of NGC 3516 observed by BeppoSAX
Authors: Costantini, E Nicastro, F Fruscione, A Mathur, S Comastri, A Elvis, M Fiore, F Salvini, C Stirpe, GM Vignali, C Wilkes, B O'Brien, PT Goad, MR
Citation: E. Costantini et al., The complex X-ray absorbers of NGC 3516 observed by BeppoSAX, ASTROPHYS J, 544(1), 2000, pp. 283-292
Gamma-loud quasars: A view with BeppoSAX
Authors: Tavecchio, F Maraschi, L Ghisellini, G Celotti, A Chiappetti, L Comastri, A Fossati, G Grandi, P Pian, E Tagliaferri, G Treves, A Raiteri, CM Sambruna, R Villata, M
Citation: F. Tavecchio et al., Gamma-loud quasars: A view with BeppoSAX, ASTROPHYS J, 543(2), 2000, pp. 535-544
On the peculiar X-ray properties of the bright nearby radio-quiet quasar PDS 456
Authors: Vignali, C Comastri, A Nicastro, F Matt, G Fiore, F Palumbo, GGC
Citation: C. Vignali et al., On the peculiar X-ray properties of the bright nearby radio-quiet quasar PDS 456, ASTRON ASTR, 362(1), 2000, pp. 69-74
BeppoSAX broad-band observations of low-redshift quasars: spectral curvature and iron K-alpha lines
Authors: Mineo, T Fiore, F Laor, A Costantini, E Brandt, WN Comastri, A Della Ceca, R Elvis, M Maccacaro, T Molendi, S
Citation: T. Mineo et al., BeppoSAX broad-band observations of low-redshift quasars: spectral curvature and iron K-alpha lines, ASTRON ASTR, 359(2), 2000, pp. 471-482
Optically dim counterparts of hard X-ray selected AGNs
Authors: Maiolino, R Salvati, M Antonelli, LA Comastri, A Fiore, F Ghinassi, F Gilli, R La Franca, F Mannucci, F Risaliti, G Thompson, D Vignali, C
Citation: R. Maiolino et al., Optically dim counterparts of hard X-ray selected AGNs, ASTRON ASTR, 355(3), 2000, pp. L47-L51
The contribution of AGN to the X-ray background: the effect of iron features
Authors: Gilli, R Comastri, A Brunetti, G Setti, G
Citation: R. Gilli et al., The contribution of AGN to the X-ray background: the effect of iron features, NEW ASTRON, 4(1), 1999, pp. 45-57
AGN models for the X and gamma-ray backgrounds
Authors: Comastri, A
Citation: A. Comastri, AGN models for the X and gamma-ray backgrounds, ASTROPHYS L, 39(1-6), 1999, pp. 649-656
The BeppoSAX "HELLAS" survey
Authors: Fiore, F Giommi, P La Franca, F Matt, G Perola, GC Comastri, A Molendi, S Elvis, M Gioia, I Tamburelli, F Ricci, D Pompilio, F
Citation: F. Fiore et al., The BeppoSAX "HELLAS" survey, ASTROPHYS L, 39(1-6), 1999, pp. 657-660
The contribution of faint active galactic nuclei to the hard X-ray background
Authors: Fiore, F La Franca, F Giommi, P Elvis, M Matt, G Comastri, A Molendi, S Gioia, I
Citation: F. Fiore et al., The contribution of faint active galactic nuclei to the hard X-ray background, M NOT R AST, 306(4), 1999, pp. L55-L60
X-rays from the highly polarized broad absorption line QSO CSO 755
Authors: Brandt, WN Comastri, A Gallagher, SC Sambruna, RM Boller, T Laor, A
Citation: Wn. Brandt et al., X-rays from the highly polarized broad absorption line QSO CSO 755, ASTROPHYS J, 525(2), 1999, pp. L69-L72
Probing the hard X-ray properties of high-redshift radio-quiet quasars with ASCA
Authors: Vignali, C Comastri, A Cappi, M Palumbo, GGC Matsuoka, M Kubo, H
Citation: C. Vignali et al., Probing the hard X-ray properties of high-redshift radio-quiet quasars with ASCA, ASTROPHYS J, 516(2), 1999, pp. 582-590
The steep spectrum quasar PG1404+226 with ASCA, HST and ROSAT
Authors: Ulrich, MH Comastri, A Komossa, S Crane, P
Citation: Mh. Ulrich et al., The steep spectrum quasar PG1404+226 with ASCA, HST and ROSAT, ASTRON ASTR, 350(3), 1999, pp. 816-826
Risultati: 1-25 | 26-31